HydroBASINS lev08 watershed · #2080020770
Bassin du Curé
A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.
Crosses 1 administrative regions : Charente-Maritime
Sub-basin area
457,4km²
Upstream area
457,4km²
Discharge
7,63m³/s
Mean elev.
19m
Administrative coverage
1 dept-equivalent regions (GADM L2)
- 458.5 km²100.0% of basin
44 communes (GADM L5)Available for FRA, RWA
- Benon36.75 km²76% commune
- Andilly27.82 km²96% commune
- Saint-Georges-du-Bois27.54 km²99% commune
- Saint-Médard-d'Aunis23.12 km²100% commune
- Sainte-Soulle21.81 km²100% commune
- Saint-Sauveur-d'Aunis19.43 km²100% commune
- Aigrefeuille-d'Aunis17.13 km²100% commune
- Nuaillé-d'Aunis16.79 km²97% commune
- Vouhé15.54 km²100% commune
- Bouhet15.47 km²100% commune
- Villedoux15.18 km²100% commune
- Le Thou14.44 km²76% commune
- Chambon14.08 km²76% commune
- Puyravault13.93 km²100% commune
- Forges13.71 km²98% commune
- Saint-Christophe13.47 km²100% commune
- Vérines13.41 km²100% commune
- Longèves12.86 km²100% commune
- Charron12.84 km²32% commune
- Dompierre-sur-Mer12.68 km²67% commune
- Saint-Xandre11.46 km²87% commune
- Angliers10.79 km²100% commune
- Marans9.91 km²12% commune
- Virson9.89 km²100% commune
- Anais9.48 km²100% commune
- Saint-Ouen-d'Aunis9.04 km²100% commune
- Le Gué-d'Alleré7.58 km²100% commune
- Ferrières6.08 km²85% commune
- Esnandes5.11 km²65% commune
- Surgères3.56 km²12% commune
- Saint-Saturnin-du-Bois3.10 km²13% commune
- Marsilly2.91 km²24% commune
- Péré2.18 km²26% commune
- Bourgneuf2.05 km²80% commune
- Croix-Chapeau1.88 km²39% commune
- La Jarrie1.79 km²19% commune
- Saint-Pierre-d'Amilly1.12 km²6% commune
- Montroy0.89 km²22% commune
- Puilboreau0.78 km²10% commune
- Thairé0.58 km²3% commune
- Saint-Jean-de-Liversay0.20 km²0% commune
- Courçon0.12 km²1% commune
- Ciré-d'Aunis0.00 km²0% commune
- Périgny0.00 km²0% commune
13 intersecting protected areas
Marais Poitevin
IUCN VRegional Nature Park
189.75 km² overlap
Marais poitevin
IUCN IIIWetland of International Importance (Ramsar Site)
39.15 km² overlap
Marais poitevin
IUCN Not ReportedSpecial Protection Area (Birds Directive)
38.36 km² overlap
Marais Poitevin
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
38.36 km² overlap
Biotope Protection Order
17.33 km² overlap
Vallée du Curé
IUCN IVBiotope Protection Order
6.27 km² overlap
Vallée du Curé
IUCN IVNatural habitats protection Order
6.27 km² overlap
Marine Nature Park
0.79 km² overlap
National Nature Reserve
0.79 km² overlap
4 more protected areassorted by overlap area
Land acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
0.32 km² overlap
marais de villedoux
IUCN IVLand acquired by a regional conservatory of natural areas
0.08 km² overlap
Land acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
0.05 km² overlap
Les Pierrières
IUCN IVBiotope Protection Order
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 258 distinct species · 174 989 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 43 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Bassin du Curé : 36 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) + 7 bulles famille, 104 interactions GloBI documentées sur 5 types (connectance 11.5%, filtre Serrano α=0.2). Les 7 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
12,5°C
Annual rain
775mm
Moisture idx (CMI)
-0,07
Runoff
524mm/an
PET
831mm
AET
581mm
Mean slope
0,6°
Water table
33cm
Forest
1%
Crops
66%
Urban
2%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)